| .TH "MP4" "3" "Version 0.9" "Cisco Systems Inc." "MP4 File Format Library" |
| .SH "NAME" |
| .LP |
| \fBMP4ConvertFromTrackTimestamp\fR \- Convert a timestamp from the track time scale to a specified time scale. |
| .SH "SYNTAX" |
| .LP |
| #include <mp4.h> |
| .LP |
| u_int64_t \fBMP4ConvertFromTrackTimestamp\fR( |
| .br |
| MP4FileHandle \fIhFile\fP, |
| .br |
| MP4TrackId \fItrackId\fP, |
| .br |
| MP4Timestamp \fItimestamp\fP, |
| .br |
| u_int32_t \fInewTimeScale\fP |
| .br |
| ) |
| .SH "ARGUMENTS" |
| .LP |
| .TP |
| \fIhFile\fP |
| Specifies the mp4 file to which the operation applies. |
| .TP |
| \fItrackId\fP |
| Specifies the track from which the timestamp originates. |
| .TP |
| \fItimestamp\fP |
| Specifies the timestamp that is to be converted. |
| .TP |
| \fInewTimeScale\fP |
| Specifies the new time scale in ticks per second to which the timestamp should be converted. |
| .SH "RETURN VALUES" |
| .LP |
| Upon success, the timestamp in the new time scale units. Upon error, 0xFFFFFFFFFFFFFFFF. |
| .SH "DESCRIPTION" |
| .LP |
| \fBMP4ConvertFromTrackTimestamp\fR converts a timestamp such as a sample start time from the track time scale to another specified time scale. This can be used by a player application to map all track samples to a common time scale. |
| |
| .SH "SEE ALSO" |
| .LP |
| MP4(3) MP4ConvertToTrackTimestamp(3) |
